What's the 'web app' and does it run on mobiles or only desktops?

Let you browse through our community database, find/mark sentences to learn, and (after release) let you ask and answer questions about sentences in the community database. Enter in new sentences to learn (sourced from you [via grammar books, classes, etc] or a tutor you've hired). If you're working with a tutor, then it'll let your tutor record those sentences, as well.

At first, it will be optimized for laptops/desktops, so that you can quickly enter in sentences with a keyboard, rather than trying to type them on your phone. Once we have it finished, we'll see how far we can get in terms of mobile support.